The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2011
Filed:
Apr. 05, 2006
Kazuyuki Tanaka, Oita, JP;
Naoyuki Takano, Ibaraki, JP;
Shinzo Seko, Toyonaka, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A process for producing a thiazole compound of the formula (3): wherein Xis a hydrogen atom or a halogen atom, which comprises reacting a compound of the formula (1): wherein Xis as defined above, and Xrepresents a halogen atom, with ammonia and formaldehyde to obtain a hexahydrotriazine compound of the formula (2): wherein Xis as defined above, and reacting the resulting hexahydrotriazine compound with hydroxylamine under acidic conditions. According to this process, the thiazole compound of the formula (3) can be industrially advantageously produced using inexpensive ammonia with suppressing the formation of a byproduct of the formula (4): wherein Xis as defined above.